#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2018/12/9 12:13
# @Author  : lizhen
# @Site    : 
# @File    : num.py
# @Software: PyCharm


class CustomNum:
    def __add__(self, other):
        pass

    def __mul__(self, other):
        pass

    def __pow__(self, power, modulo=None):
        pass
